Clamp for trolley-wires.



DATENIEB JUNE 90, 1005 I 0. 0 BAKEWELL. CLAMP FOR TROLLEY WIRES.

APPLICATION FILED MAR.31,1905.

UNITED STATES Patented June 20, 1905.

PATENT OFFICE.

CRIS C. BAKEWELL, OF KAYLOR, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO T.W. MINFORD, OF KAYLOR, PENNSYLVANIA.

CLAMP FOR TROLLEY-WIRES.

SPECIFICATION forming part of Letters Patent No. 792,959, dated June 20,1905.

Application filed March 31, 1905. Serial No. 253,194:-

To all whom it may concern.-

Be itknown that I, Cars C. BAKEWELL, a citizen of the United States,residing at Kaylor, in the county of Armstrong and State ofPennsylvania, have invented certain new and useful Improvements inClamps for Trolley-l Vires; andI do declare the following to be afull,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

This invention relates to new and useful improvements in clamping meansfor supporting electric wiring, &c.,' and comprises means whereby atrolley-wire may be readily adjusted in place and providing means forthe purpose of making the parts interchangeable in the event of breakageor for other purposes; and the invention consists specifically invarious details of construction and in combinations and arrangements ofparts,which will be hereinafte r fully described and then specificallydefined in the appended claims.

Myinvention is illustrated in the accompanying drawings, in which Figure1 is a side elevation of one of the sections of the clamp. Fig. 2 is aview of one end of the form shown in Fig. 1. Fig. 3 is a view of theopposite end to that illustrated in Fig. 2. Fig. 4 is a side elevationof a telescoping part of the clamp. Fig. 5 is a view in end elevation ofthe telescoping part shown in Fig. i. Fig. 6 is a view of the oppositeend of the showing in Fig. 1. Fig. 7 is a side elevation of the partsassembled together. Fig. 8 is a view in end elevation of the clamp asillustrated in Fig. 7. Fig. 9 is an elevation of the opposite end of theclamping device from that shown in Fig. 8, and Fig. 10 is a detail Viewshowing a movable threaded wear-block.

Reference now being had to the details of the drawings by letter, Adesignates a shell having a chambered portion, the outline of which iscylindrical, and one wall of said chambered portion is projected,forminga clampingjaw B, which has arecess B in the inner face thereof, as shownclearly in the drawings. An

openingC (shown clearly in Figs. 1 and 2 of the drawings) is formed intothe chambered portion of said shell, said opening terminating at D,beyond which the chambered portion of the shell is continued. Anaperture is formed transversely through the upper part of said shell andadapted to receive a screw E, (shown clearly in the drawings,) and arecess F is formed in the upwardly-projecting portion of the shell andhas the marginal wall thereof threaded to receive a screw for thepurpose of supporting the clamping mechanism.

K designates a hollow cylindrical member having a wing K, which isrecessed, as at K upon one face thereof. The diameter of said member Kis of such dimensions as to allow said member to telescope readilywithin the chambered portion of the shell A, as shown clearly in Figs. 8and 9 of the drawings, and said wing K when thus adjusted passes throughthe opening C in the shell and has a limited rocking play within thelatter. When the two clamping members are adjusted together in themanner shown in Figs. 8 and 9, it will be observed that the recesses Band K are opposed one to the other and adapted to form clamping meansfor holding a trolley or other wire. In order to hold the jaws inadjusted positions, I provide a rivet N, which passes throughdiametrically opposite and registering apertures in the shell and saidtelescoping member,the apertures in said member, it will be observed,being somewhat elongated in order to allow for a slight adjustment ofsaid member. Said rivet N is adapted to support the shell and keep itfrom spreading in case of extra or continued strain.

It will be observed that the upper portion of the member K is cut away,and a plateT is seated in said cut-awayportion, being removably heldtherein, and said plate has threads engaged by the threads of the boltE, whereby as said screw is tightened the cylindrical member K may beturned so that the integral jaw thereof will be held in clampingrelation with the jaw upon the shell A. By the provision of the plate Tit will be observed that the same may be easily removed and a new onesubstituted therefor when the threads become worn, thereby effecting asaving in replacing the entire cylindrical shell K.

From the foregoing it will be observed that by the provision of aclamping mechanism as shown and described a simple and efficient meansis provided for holding a trolley-wire and aflording mechanism wherebyin the event of one of the parts of the clamping device becomingdefective the same may be easily and quickly replaced.

While I have shown a particular form of apparatus illustrating myinvention, it will be understood that I may vary the same, if desired,as to details without in any way departing from the spirit of theinvention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

l. A clamping device for trolley-wi res, comprising a shell having acylindrical outlined chambered portion, one wall of which is projectedto form an integral jaw, a cylindrical member adapted to telescopewithin said chambered portion and having an integral jaw adapted to havea rocking movement within an opening leading into said chambered portionof the shell, and means for holding the jaws in adjusted positions, asset forth.

2. Aclampingdevice for trolleywires,com prising a shell having acylindrical outlined chambered portion, one wall of which is projectedto form an integral jaw, a cylindrical member adapted to telescopewithin said chambered portion and having an integral jaw adapted to havea rocking movement within an opening leading'into said chambered portionof the shell, a plate seated in a recessed portion of said member andhaving threads in a grooved portion of said plate, means for holding thejaws in adjusted positions, and a bolt passing through registeringapertures in said shell and engaging the threads of said member, as setforth.

3. A clamping device for trolleywires,com prising a shell having ashouldered portion and an integral jaw projecting from one side of saidshell, a cylindrical member telescoping within said shell and providedwith an integral jaw, a plate seated in a recessed portion of saidcylindrical member and provided with a recess-with a threaded wall, ascrew passing through the threaded aperture in said shell and engagingthe threads of said plate,

whereby the cylindrical member may be turned as the screw is operated,as set forth. In testimony whereof I hereunto aflix my signature inpresence of two witnesses.

CRIS G. .BAKEVVELL.

Witnesses:

W. F. BUTLER, S. J. DELANEY.

